December 2014
Beginner
874 pages
30h 11m
English
Content preview from OS X Yosemite: The Missing ManualBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Introduction
OS X is an impressive technical achievement; many experts call it the best personal-computer operating system on earth. But beware its name.
The X is meant to be a Roman numeral, pronounced “ten.” Don’t say “oh ess ex.” You’ll get funny looks in public.
In any case, OS X Yosemite is the 10th major version of Apple’s Unix-based operating system. It’s got very little in common with the original Mac operating system, the one that saw Apple through the 1980s and 1990s. Apple dumped that in 2001, when CEO Steve Jobs decided it was time for a change. Apple had just spent too many years piling new features onto a software foundation originally poured in 1984. Programmers and customers complained of the “spaghetti code” the Mac OS had become.
So underneath OS X’s classy, translucent desktop is Unix, the industrial-strength, rock-solid OS that drives many a Web site and university. It’s not new by any means; in fact, it’s decades old and has been polished by generations of programmers.
Note
Apple no longer refers to its computer operating system as Mac OS X. Now it’s just “OS X,” without the “Mac.” Why? Apple says it’s to match up better with iOS, its operating system for the iPhone and iPad.
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